College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Given: Consider an iron anchor, with density 7.8 × 103 kg/m3.
What fraction of the iron anchor’s weight will be supported by the buoyant force when submerged in saltwater, with density 1025 kg/m3?
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- An aluminum cylinder weighs 1.07 N. When this same cylinder is completely submerged in alcohol, the volume of the displaced alcohol is 3.90 × 10−5 m3. If the cylinder is suspended from a scale while submerged in the alcohol, the scale reading is 0.743 N. What is the specific gravity of the alcohol? (The density of water is 1.00 × 103 kg/m3)arrow_forwardSuppose your body has a density of 988 kg/m3. part a) What fraction of you will be submerged when floating gently in freshwater (with density 1000 kg/m3)? (hint: vsf/vo) part b) What fraction of you will be submerged when floating gently in salt water (with a density of 1027 kg/m3)?arrow_forwardAn iceberg that floats with 88.5% of its volume submerged in seawater of density 1060 kg/m^3. if the iceberg were to drift to a region where the seawater was less salty and only had a density of 1020 kg/m^3, how much of the iceberg would be submerged?arrow_forward
- A hollow plastic sphere is held below the surface of a lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.650 m3 and the tension in the rope is 900 N. (a) Calculate the force of pushing water on the sphere. (b) What is the mass of the sphere? (c) The cord breaks and the sphere rises to the surface. When the sphere stops, what fraction of its volume will be submerged?arrow_forwardWater has a mass density of 1000 kg/m3. If a block of volume 20 m3 is fully submerged in water, what is the buoyant force acting on it?arrow_forwardA scale reads 85 N when a piece of aluminum is hanging from it. What does it read when it is lowered so that the aluminum is submerged in water? The density of alluminum is 2700 kg / (m ^ 3); Useg = 9.8 m/s ^ 2 Calculate answer to two decimals .arrow_forward
- A hollow plastic cube of side length 80 cm is held below the surface of a lake by a cord anchored to the bottom of the lake. The cube has a mass of 85 kg and the density of the lake water is 1025 kg/m. a) What is the buoyant force exerted on the cube by the lake water? b) If the top surface of the cube is 25.4 m below the surface of the lake, what is the gauge pressure at the top surface of the cube? P. = 1.013 x 10 Pa. atm c) What is the force on the top face of the cube? Note the top face will have a square cross section and the length of the side is 80 cm.arrow_forwardIf the human body has an average density of 971 kg/m3, what fraction of a person is submerged when floating gently in fresh water?arrow_forwardWhen an object with a volume of 4 x 10^-3 m^3 is completely submerged in water ( p water = 1000 kg/m^3), the buoyant force acting on the object will be?arrow_forward
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